Diesel distributor fuel-injection pumps VE - K-Jet.org

Axial-pistondistributorpumpsManifold-pressurecompensationExhaust-gas turbochargingBecause it increases the mass of airinducted by the engine, exhaust turbochargingboosts a diesel engine’s poweroutput considerably over that of a naturallyaspirated diesel engine, with littleincrease in dimensions and enginespeeds. This means that the brakehorsepower can be increased correspondingto the increase in air mass(Figure 6). In addition, it is often possibleto also reduce the specific fuel consumption.An exhaust-gas turbochargeris used to pressure-charge the dieselengine (Fig. 5).With an exhaust turbocharger, theengine’s exhaust gas, instead of simplybeing discharged into the atmosphere,is used to drive the turbocharger’sturbine at speeds which can exceed100,000 min –1 . Turbine and turbochargercompressor are connected through ashaft. The compressor draws in air,compresses it, and supplies it to theengine’s combustion chambers underpressure, whereby not only the airpressure rises but also the airtemperature. If temperatures becomeexcessive, some form of air cooling(intercooling) is needed between theturbocharger and the engine intake.Fig. 5: Diesel engine with exhaust-gas turbocharger36UMK0365Y